DIBASIC
Etymology
Adjective
dibasic (not comparable)
(chemistry) (of an acid) containing two replaceable hydrogen atoms
(chemistry) (of a salt) having two atoms of a univalent metal
Source: Wiktionary
Di*ba"sic, a. Etym: [Pref. di- + basic.] (Chem.)
Definition: Having two acid hydrogen atoms capable of replacement by basic
atoms or radicals, in forming salts; bibasic; -- said of acids, as
oxalic or sulphuric acids. Cf. Diacid, Bibasic.
Note: In the case of certain acids dibasic and divalent are not
synonymous; as, tartaric acid is tetravalent and dibasic, lactic acid
is divalent but monobasic.
Source: Webster’s Unabridged Dictionary 1913 Edition